You don’t sort of imagine what somebody might have thought at a certain moment. Some writers feel like it’s okay to just sort of go in the heads of their subjects and make it up. I feel that unless you can document and be certain about what it is that you’re writing about, the reader is going to lose faith in your own integrity. So I try to make it come alive as much as possible by endless research, so I know what the room looked like when the person was in there. If somebody interviewed a person, or a diary entry said what they said at a meeting, I can record that. I think my integrity depends upon not stretching over that line that separates non-fiction from fiction, as too many non-fiction writers are doing nowadays. They make it seem like a novel, rather than actual non-fiction.